Data/hora: 07/06/2024 02:32:34

Biblioteca(s): | Embrapa Florestas.
Data corrente: | 16/08/2016
Data da última atualização: | 11/07/2017
Autoria: | CADEMARTORI, P. H. G. de; CARVALHO, A. R. de; MARANGONI, P. R. D.; BERTON, M. A. C.; BLANCHET, P.; BOLZON DE MUNIZ, G. I.; MAGALHAES, W. L. E.
Afiliação: | PEDRO HENRIQUE GONZALEZ DE CADEMARTORI, Wood and Forestry Science Center (PPGEF), UFPR; AGNE ROANI DE CARVALHO, SENAI Institute of Innovation in Electrochemistry; PAULO ROBERTO DANTAS MARANGONI, SENAI Institute of Innovation in Electrochemistry; MARCOS ANTONIO COELHO BERTON, SENAI Institute of Innovation in Electrochemistry; PIERRE BLANCHET, Université Laval; GRACIELA INÊS BOLZON DE MUNIZ, UFPR; WASHINGTON LUIZ ESTEVES MAGALHAES, CNPF.
Título: | Adhesion performance and film formation of acrylic emulsion coating on mediumdensity fiberboard treated with Ar plasma.
Ano de publicação: | 2016
Fonte/Imprenta: | International Journal of Adhesion and Adhesives, v. 70, p. 322-328, Oct. 2016.
DOI: | 10.1016/j.ijadhadh.2016.08.002
Idioma: | Inglês
Conteúdo: | This work investigates the adhesion properties of medium density fiberboard (MDF) panel surfaces treated by an argon plasma at two power levels (50 and 150 W) and four glow discharge times (10, 40, 60 and 120 s) and then coated with an acrylic emulsion. Wettability parameters and film formation kinetics were investigated by water apparent contact angle and diffusing wave spectroscopy, respectively. Pull-off strength was used to determine coating/wood adhesion. The aging effect of 300-days in storage at ambient conditions was examined by apparent contact angle measurements. The wettability of the MDF surface was enhanced significantly - especially at the 150 W power level ? that improves coating/wood adhesion. A film formation process occurred in shorter time for plasma treated samples due to the faster motion of particles. MDF panels partially recovered their natural hydrophobicity in the first ten days of storage. Nevertheless, higher levels of power and time of glow discharge were able to slow down the aging effects.
Palavras-Chave: | Diffusing wave spectroscopy; Espectroscopia; MDF; Molhabilidade; Surface treatment; Tratamento da superfície.
Thesagro: | Madeira.
Thesaurus Nal: | Wettability.
Categoria do assunto: | W Química e Física
Registro original: | Embrapa Florestas (CNPF)
Exemplares: | CNPF - (55246-1) - UPC - AP - DD -  -  -  - DIS